Share-Based Compensation - Narrative (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Jan. 30, 2016 USD ($) metric $ / shares shares	Jan. 31, 2015 USD ($) $ / shares shares	Feb. 01, 2014 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unissued common shares reserved for future grants \| shares	31,500	14,000
Total share-based compensation expense	$ 118	$ 73	$ 106
Related income tax benefit	$ 46	$ 29	$ 41
Restricted Stock and Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Grant date weighted average fair value (in dollars per share) \| $ / shares	$ 73.76	$ 70.50	$ 62.76
Number of outstanding units after applying actual or expected payout rates \| shares	3,471
Unrecognized compensation expenses	$ 149
Weighted-average period during which unrecognized compensation is expected to be recognized	1 year 3 months 18 days
Fair value	$ 90	$ 40	$ 28
Performance Share Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Grant date weighted average fair value (in dollars per share) \| $ / shares	$ 74.19	$ 73.12	$ 57.22
Number of outstanding units after applying actual or expected payout rates \| shares	1,812
Number of strategic metrics \| metric	4
Performance period of strategic metrics	2 years
Future maximum compensation expense	$ 230
Total fair value of stock options vested	$ 2	$ 11	$ 14
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	2 years		4 years
Expiration period / Performance period			10 years
Total fair value of stock options vested	$ 23	$ 37	$ 53
Contractual term			10 years
Weighted-average remaining life of currently exercisable options	4 years 7 months 6 days
Weighted-average remaining life of outstanding options	4 years 8 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award to Nonemployee Directors Award Exercisable Period	1 year
Director \| Restricted Stock and Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year

Share Based Compensation Arrangement By Share Based Payment Award, Award Vesting Period, Strategic Metrics

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- Definition

Description of the period of time, from the grant date, after which the equity-based award expires.

+ References

No definition available.

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- Definition

Represents the contractual term of stock based compensation awards granted to non-employee directors.

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No definition available.

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- Definition

The total fair value of options for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, or cash in accordance with the terms of the arrangement.

+ References

No definition available.

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- Definition

This element represents maximum future compensation expense for performance share units outstanding as of the reporting date.

+ References

No definition available.

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- Definition

Represents the number of performance share units outstanding after applying actual or expected payout rates.

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No definition available.

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- Definition

This element represents the period over which options granted to non-employee directors become exercisable.

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Strategic Metrics

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
-Subparagraph (a)(1)
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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